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Session 51 -- Planetary Nebulae

Display presentation, Thursday, January 13, 9:30-6:45, Salons I/II Room (Crystal Gateway)

[51.12] EUVE Observations of Planetary Nebulae

We present preliminary results of extreme ultraviolet observations (60--740 \AA) of a complete sample of planetary nebulae (PN) selected from the Strasbourg-ESO Catalog (Acker et al.\ 1992) and observed during the Extreme Ultraviolet Explorer (EUVE) all-sky survey.

Our selection criteria are focused on minimizing the impact of the interstellar absorption on the extreme ultraviolet observations, and our sample includes the 26 closest PN (distances $\le$ 1 kpc) at high galactic latitude ($|b|\ge 20\deg$). During the EUVE all-sky survey at least five PN in our sample (NGC 246, NGC 1360, K1-16, Lo Tr5, NGC 4361) were detected in the shortest band (58--174 \AA). The extreme ultraviolet emission originates in the central star. Upper limits in the four EUVE bands (centered at $\approx$ 100, 200, 400, 600 \AA) are given for all the sources.

This work has been supported by NASA contract NAS5-30180.

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